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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 744 · 40 questions
TalentJR

How to do it in your head (Tens first): Keep the first number as it is. Add the tens of the second number. Add the ones.

NameDateTime takenScore ___ / 40
  1. 1.57 + 25 =
  2. 2.54 + 31 =
  3. 3.35 + 26 =
  4. 4.24 + 71 =
  5. 5.36 + 75 =
  6. 6.24 + 47 =
  7. 7.32 + 46 =
  8. 8.48 + 63 =
  9. 9.55 + 41 =
  10. 10.45 + 76 =
  11. 11.78 + 36 =
  12. 12.79 + 41 =
  13. 13.65 + 41 =
  14. 14.52 + 21 =
  15. 15.24 + 49 =
  16. 16.37 + 76 =
  17. 17.73 + 28 =
  18. 18.24 + 75 =
  19. 19.66 + 14 =
  20. 20.22 + 25 =
  21. 21.21 + 72 =
  22. 22.66 + 75 =
  23. 23.68 + 75 =
  24. 24.69 + 21 =
  25. 25.28 + 28 =
  26. 26.65 + 88 =
  27. 27.65 + 14 =
  28. 28.79 + 46 =
  29. 29.84 + 35 =
  30. 30.61 + 34 =
  31. 31.40 + 51 =
  32. 32.32 + 19 =
  33. 33.61 + 43 =
  34. 34.27 + 16 =
  35. 35.71 + 48 =
  36. 36.62 + 86 =
  37. 37.84 + 22 =
  38. 38.35 + 78 =
  39. 39.68 + 52 =
  40. 40.44 + 72 =

Answer key

  1. 82
  2. 85
  3. 61
  4. 95
  5. 111
  6. 71
  7. 78
  8. 111
  9. 96
  10. 121
  11. 114
  12. 120
  13. 106
  14. 73
  15. 73
  16. 113
  17. 101
  18. 99
  19. 80
  20. 47
  21. 93
  22. 141
  23. 143
  24. 90
  25. 56
  26. 153
  27. 79
  28. 125
  29. 119
  30. 95
  31. 91
  32. 51
  33. 104
  34. 43
  35. 119
  36. 148
  37. 106
  38. 113
  39. 120
  40. 116

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